"""
回过头复习一遍代码，在每一行上面添加注释。
倒着大声把每一行读出来，以发现你的错误。
从现在开始，当你犯错了，就在本子上写下你的错误。
当你学习下个练习之前，看看这些错误，以避免再犯。
记住每个人都会犯错。程序员就像音乐家一样总让别人觉得他们很完美，从不犯错，但其实他们经常犯错。"""


print("Mary had a little lamb.")
print("Its fleece was white as {}.".format('snow'))
print("And everywhere that Mary went.")
print("." * 10) # what'd that do?

end1 = "C"
end2 = "h"
end3 = "e"
end4 = "e"
end5 = "s"
end6 = "e"
end7 = "B"
end8 = "u"
end9 = "r"
end10 = "g"
end11 = "e"
end12 = "r"

# watch that comma at the end. try removing it to see what h
print(end1 + end2 + end3 + end4 + end5 + end6, end=' ')
print(end7 + end8 + end9 + end10 + end11 + end12)